T-Mobile is hosting “Un-carrier 7.0″ this afternoon in San Francisco, hinting that this time “it’s personal.” It’s not clear what that means yet, but in general, the Bellevue-based carrier has used these events in the past to introduce new marketing ploys aimed at stealing away customers from the competition. So far, it has worked, with T-Mobile winning millions of new customers over the past year. Another cryptic message posted to Twitter by CEO John Legere includes a video of a man spray-painting a cloud on a wall, so one wild guess would be that we will could be hearing about a potential cloud service that could store people’s photos … Read More on GeekWire